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214 Uppsatser om Random Indexing - Sida 2 av 15

Talande ord : En jämförande studie av taggar och kontrollerade ämnesord för indexering av skönlitteratur

How do you summarize the content of a fictional work, let?s sayLord of the Rings, into a few "telling" words that may represent it? This master?s thesis is a comparative study of how library users? freely chosen tags/keywords deviate from controlled vocabulary made by professional indexers when representing fiction. The thesis answers four main questions:? Do the tags that the library users give fictional works correspond to the categories used in professional indexing in Sweden?? Do the tags follow the standards for vocabulary, semantics and syntax used when indexing professionally?? Do the tags add something to document representations?? Are there differences between the tags used for adult fiction and the tags used for children?s literature?With a starting point in indexing theories of Frederick W. Lancaster, Annelise Pejtersen, and the semiotic theory of the indexing process of Jens-Erik Mai, 383 tags from totally 70 fictional works are analyzed.

En jämförelse av stickprovsmetoder vid mätning av radioaktivetet på en yta

This study compares the sample variance of the mean in a simple random sample (SRS) and a systematic sample from a surface. The study also compares the prediction error variance in a SRS and systematic sample from a random field. Recommendations are presented on which method to use in the clearance and exemption process in the nuclear industry. The results indicate that quadratic systematic sampling outperformed SRS in most instances and proved to be especially efficient in the presence of a long-ranged covariance function and high sampling intensity (i.e. short distances between observations).

Svenskt barnbildarkiv (SBBA) ? Barnbilder, bildindexering och digitalisering

The aim of this thesis is to examine the possibilities and challenges facing an archive, Svenskt barnbildarkiv (SBBA), if to publish its material online. Our context for this study is image indexing. Our main questions are: How can SBBA index their pictures for a possible publication on the Internet? Are there any pros or cons in the determination of topics in children?s images, and in that case, which? What search paths are important when indexing children?s pictures, and why are they important? To answer these questions, the thesis is built on a wide study of interdisciplinary literature. But also on SBBA: s own handbook for image ?registration?, and on interviews with the persons working at the archive SBBA, in Eskilstuna.

Passage Retrieval en studie av index

The aim with this thesis came out of a strong interest for Passage Retrieval. Our intention has not been to evaluate an IR-system. Instead our goal has been to analyze the result of indexing documents and their passages. We have been studying the weights of the different terms in the different indices, in comparison with other parameters like frequency, normalized frequency and the inversed document frequency. Further more we have been looking at how the weights are spread using for instance the standard deviation.

Kvinnor är inte ett ämne - Ämnesindexering på Kvinnohistoriska samlingarna

The purpose of this paper is to examine the subject indexing in the bibliographic databaseKVINNSAM at Kvinnohistoriska samlingarna. the documentation and information centre·of Women's studies in Sweden.The focus of the study is the list of index terms produced at this centre. The paper tries to answer the following questions: a) How has the indexing developed? b) How can it be improved? c) Is there a need for feminist indexing? The method of the study is primarily observations and interviews. Texts and ideas by Birger Hj¢rland, D.

Finnes: flata. Sökes: information. Om lesbiska, informationsbehov och ämnesbestämning av skönlitteratur.

The aim of this Masters thesis is, partly, to examine the information needs of lesbians: what discernable information needs they have, how they seek information and which information sources they use. The purpose is also to examine what part fiction plays regarding the information needs mentioned above and how fiction indexing could improve retrieval. The study is conducted through ten qualitative interviews with lesbians as well as through textual analysis. The theoretical framework includes queer theory and theory concerning information needs and uses. The results indicate that lesbians have evident information needs that mostly concern identity.

Vad automatisk indexering och genreklassifikation kan tillföra skönlitteraturen

This thesis examines what automatic indexing and genre classification may bring to fiction. The thesis studies five theorists of the subject to find out what the biggest problems are concerning fiction indexing. The thesis also investigates which automatic text analysis methods that can be effective for automatic indexing and genre classifying fiction. To show that it is possible according to philosophy of language to index fiction, in particular to automatically index it. Wittgenstein?s, Barthes? and Ricoeur?s language and fiction theories are presented and used to problemize the subject.

Känslan i bilden : Sociala taggars användbarhet vid bildsökning i Flickr

Image indexing research today is either conducted on a visual attribute level or on a higher semantic level, forming a semantic gap between the two. There is much to gain if research progress from the two fields is combined. Image retrieval using access points in both visual and semantic significations could improve retrieval and bridge the gap. In social media today, images are often the primary communication agent and the number of images on the web is increasing in an uncontrolled way. New and efficient ways to index and retrieve the images are needed.The purpose of this study is to examine if emotions could be a semantic access point for image retrieval and if folksonomy indexing is useful when searching for images that represent emotions.

Att hitta Ett hem vid världens ände: Om sexualitet och könsidentitet vid ämnesordsindexering av skönlitteratur.

This master thesis aims to examine the process of indexing fiction when it comes to area of sexuality and gender identity. The empiric work that forms the basis of the thesis are three investigations:(a) examining the current status of indexing fiction within the catalogues of six Swedish medium-sized libraries;(b) interviewing librarians who allocate the subject headings; and(c) an analysis of the Swedish subject heading system Att indexera skönlitteratur.This will be concluded with an analysis of the gathered material through queer theoretic standpoint with the help of critical classification and its inclusion through separation, and marginalization where subjects that differs from the norm is included but only by being separated from the norm, or ignored totally. This will show that there are similarities with how different groups get treated within the classification systems and how they are treated in subject heading indexing. An example of this in Att indexera skönlitteratur is that heterosexuality never is mentioned in the subject heading but is always present as the silent norm, while gender identity is marginalized through exclusion of the subject heading, and related words are instead being included under sexual identity..

Att beskriva etnografiska föremål med hjälp av ämnesanalys och ämnesindexering

The aim of this masters thesis is to analyze how subjects of ethnographical objects should be described. To obtain this we focus on which subject aspects of ethnographical objects that could be possible and valuable to analyze and to index. This is done with the help of established LIS subject indexing theories, and through the perspective of ethnographical museum documentation. The theories are both general, concerning the stages of subject indexing, and more specific, regarding the indexing of pictures. One of the latter is the theoretical model of Sara Shatford, from the article Analyzing the Subject of a Picture.

En slumpmässig vandring eller genomsnittlig återgång : Råder förutsägbarhet på Stockholmsbörsen?

This study has been conducted in order to determine the existence of predictability for the Stockholm stock exchange. With this purpose the random walk theory has been raised against the theory of mean reversion in order to determine which theory is the most substantial. Data has been collected from Nasdaq OMX Nordic and furtherly been processed using the statistical software EViews. Swedish listed companies? daily share values between 2000-2014 have been analyzed using two tests; an Augmented Dickey Fuller test and a Variance Ratio test.

Hybridmodeller för prediktiv modellering skapade med genetisk programmering.

Det finns idag ett stort behov av att kunna klassificera stora mängder data på ett effektivt sätt. Prediktiv modellering är ett område inom data mining där prediktioner kan utföras baserat på tidigare erfarenheter. Dessa prediktioner presenteras sedan i en modell. Avvägningen mellan tolkningsbarhet och träffsäkerhet är ett begrepp som beskriver hur träffsäkra modeller ofta är ogenomskinliga, medan genomskinliga modeller ofta har lägre träffsäkerhet. Detta är ett problem eftersom det finns ett behov av modeller som är både träffsäkra och tolkningsbara.I denna studie visas hur man kan gå till väga för att skapa en modell som har en träffsäkerhet i klass med en ogenomskinlig modell, men samtidigt har en högre tolkningsbarhet.

Effektivitet på den nordiska terminsmarknaden : bevis från OMX Derivatives Market

 I uppsatsen undersöks effektiviteten av de tre nordiska aktieindexterminerna OMXS30, OBX och OMXC20 vars underliggande index representerar den svenska, norska respektive den danska aktiemarknaden. Analysen baseras på den svaga formen av den effektiva marknadshypotesen och den närbesläktade random walk hypotesen. Aktieindexterminerna undersöks under perioden januari 1997 till december 2008 samt under perioder då den nordiska marknaden karaktäriseras av bull och bear perioder. Testresultaten av Augmented Dickey-Fuller (ADF) samt Kwiatkowski, Phillips, Schmidt och Shin (KPSS) testet tyder på att aktieindexterminerna följer en random walk och att nordiska aktieindexterminer är effektiva under den undersökta perioden. Då testen utförs för de kortare bull och bear perioderna erhålls motsägelsefulla resultat vilket medför att slutsatser om huruvida aktieindexterminerna är effektiva under dessa perioder ej kan dras. .

Test av svag marknadseffektivitet för OMX Stockholm 30

Studiens syfte är att se huruvida OMX Stockholm 30 är svagt effektiv. Studien bygger på de kurser Stockholmsbörsen publi-cerar för OMX Stockholm 30. Vi har valt en strikt de-duktiv ansats. Utgångspunkten är Famas teorier om den effektiva marknaden, där vi valt att inrikta oss på den svaga formen av effektivitet. Vi genomför ett antal tester för att se ifall vi kan urskilja ett mönster i index-kurserna eller om priserna följer en ?random walk?..

Indexering av humanistisk litteratur och humanistiska databaser ? exemplet MLA International Bibliography

This thesis aims to answer the following questions: What type of vocabulary is used in the humanities? What does this implicate when it comes to indexing in the humanities? How do humanities scholars seek information and what type of information do they need? What consequences does this have when it comes to the development of humanities databases? How is the MLA International Bibliography organized? How does its indexing system ? CIFT ? work? How does the MLA International Bibliography correspond with the needs of the humanities scholar? The study shows that the type of vocabulary used in the humanities differs significantly from that used in the sciences. Therefore, information retrieval is often said to be problematic in the humanities when compared to the sciences. This is, however, not completely true. If consideration is taken to the different type of vocabulary used in the humanities, subject access proves to be more straightforward than has been generally recognized.

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